remove dst/rendertarget support for kARGB_4444_Config

gyp/SampleApp.gyp

 {
   'targets': [
     {
       'target_name': 'SampleApp',
       'type': 'executable',
       'mac_bundle' : 1,
       'include_dirs' : [
         '../src/core',
         '../src/effects', #needed for BlurMask.h
         '../gm',       # needed to pull gm.h
@@ skipping 81 matching lines @@
         '../samplecode/SamplePoints.cpp',
         '../samplecode/SamplePolyToPoly.cpp',
         '../samplecode/SampleRegion.cpp',
         '../samplecode/SampleRepeatTile.cpp',
         '../samplecode/SampleRotateCircles.cpp',
         '../samplecode/SampleShaders.cpp',
         '../samplecode/SampleShaderText.cpp',
         '../samplecode/SampleSkLayer.cpp',
         '../samplecode/SampleSlides.cpp',
         '../samplecode/SampleStrokePath.cpp',
-        '../samplecode/SampleStrokeText.cpp',
         '../samplecode/SampleTests.cpp',
         '../samplecode/SampleText.cpp',
         '../samplecode/SampleTextAlpha.cpp',
         '../samplecode/SampleTextBox.cpp',
         '../samplecode/SampleTextOnPath.cpp',
         '../samplecode/SampleTextureDomain.cpp',
         '../samplecode/SampleTiling.cpp',
         '../samplecode/SampleTinyBitmap.cpp',
         '../samplecode/SampleUnitMapper.cpp',
         '../samplecode/SampleUnpremul.cpp',
@@ skipping 195 matching lines @@
       },
     },
   ],
 }
 
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